<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avater_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- from表单 -->
      <el-form
        :model="loginFrom"
        label-width="0px"
        class="login_form"
        :rules="loginFormRules"
        ref="loginFormRef"
      >
        <!-- 用戶名 -->
        <el-form-item prop="username">
          <el-input v-model="loginFrom.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密碼 -->
        <el-form-item prop="password">
          <el-input v-model="loginFrom.password" prefix-icon="iconfont icon-mima" type="password"></el-input>
        </el-form-item>
        <!-- 按鈕 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  props: {
    msg: String,
  },
  data() {
    return {
      //登录表单的数据绑定对象
      loginFrom: {
        username: "admin",
        password: "123456",
      },
      //表单验证规则对象
      loginFormRules: {
        username: [
          //验证用户名是否合法
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" },
        ],
        password: [
          //密码校验规则
          { required: true, message: "请输入登录密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
    resetLoginForm() {
      //重置表单
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return;

        const { data: res } = await this.$http.post("login", this.loginFrom);

        console.log(valid);
        if (res.meta.status !== 200) return this.$message.error("登录失败!");
        this.$message.success("登录成功!");
        window.sessionStorage.setItem("token", res.data.token);
        this.$router.push("/home");
      });
    },
  },
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang='less'>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avater_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #eee;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
